<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
          <div>
            <img src="../assets/heima.png" alt="">
            <span>电商后台管理系统</span>
          </div>
          <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <el-container>
          <el-aside :width="isCollapse ? '64px':'200px'">
              <div class="toggle-button" @click="toggleColl">
                |||
              </div>
            <!-- 侧边栏菜单区域 -->
              <el-menu
                background-color="#333744"
                text-color="#fff"
                active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
                <!-- 这是一级菜单 -->
                <el-submenu :index="item.id + ''" v-for="item in menuLists" :key="item.id">
                  <!-- 一级菜单的模板区域 -->
                  <template slot="title">
                    <!-- 图标 -->
                    <i :class="iconsObj[item.id]"></i>
                    <!-- 文本 -->
                    <span>{{item.authName}}</span>
                  </template>
                  <!-- 二级菜单 -->
                  <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                    <template slot="title">
                    <!-- 图标 -->
                    <i class="el-icon-menu"></i>
                    <!-- 文本 -->
                    <span>{{subItem.authName}}</span>
                  </template>
                  </el-menu-item>
                </el-submenu>
              </el-menu>
          </el-aside>
          <!-- 右侧主题区域 -->
          <el-main>
            <!-- 路由占位符 -->
              <router-view>
              </router-view>
          </el-main>
        </el-container>
</el-container>



</template>

<script>
export default {
    data() {
      return {
      //左侧菜单数据
        menuLists: [],
        iconsObj: {
           '125': 'el-icon-s-check',
           '103': 'el-icon-share',
           '101': 'el-icon-s-shop',
           '102': 'el-icon-s-order',
           '145': 'el-icon-s-claim '
        },
        // 是否折叠
        isCollapse: false,
        // 被激活的链接地址
        activePath: ''
      }
    },
    created() {
      this.activePath = window.sessionStorage.getItem('activePath')
      this.getMenuList()
    },
    methods: {
    // 退出登录方法
      logout(){
         window.sessionStorage.clear()
         this.$router.push('/login')
      },
      async getMenuList(){
        const {data:res} =  await  this.$http.get('menus')
        console.log(res)
        if(res.meta.status !== 200) return this.$message.error('res.meta.msg')
        this.menuLists = res.data
      },
      // 点击按钮实现菜单的切换与展开
      toggleColl(){
           this.isCollapse = !this.isCollapse
      },
      // 保存点击的状态
      saveNavState(activePath){
          window.sessionStorage.setItem('activePath',activePath)
          this.activePath = activePath
      }

    },
}
</script>

<style lang="less" scoped>
   .home-container{
      height: 100%;
   }
   .el-header{
      padding-left: 0;
      background-color: #373d41;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
      font-size: 20px;
      div{
         display: flex;
         align-items: center;
         span{
            margin-left: 15px;
         }
      }
   }

   .el-aside{
      background-color: #333744;
      .el-menu{
         border-right: none;
      }
      .el-menu .title i{
          margin-right: 10px;
      }
   }

   .el-main{
      background-color: #eaedf1;
   }
   .toggle-button{
      background-color: #4A5064;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      text-align: center;
      letter-spacing: 0.2em;
      cursor: pointer;
   }
</style>